diff --git a/pom.xml b/pom.xml
index fa1f7ff..84e6d0b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,7 +65,7 @@
   <properties>
     <connid.version>1.6.1.0</connid.version>
     <ldaptive.version>2.4.2</ldaptive.version>
-    <testcontainers.version>1.21.3</testcontainers.version>
+    <testcontainers.version>1.21.4</testcontainers.version>
 
     <targetJdk>11</targetJdk>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>